Epoxy exhaust gas purification device

Abstract

The utility model application relates to the technical field of waste gas treatment equipment, and disclose an epoxy waste gas purification device, including box, pretreatment bin, catalytic oxidation bin and adsorption bin, the side outer wall fixedly connected with the air inlet pipe of box, and the filter cartridge is rotationally connected in the inside of pretreatment bin of box, the inner wall rotationally connected with the rotating shaft of filter cartridge, the outer wall of rotating shaft is equipped with the spray assembly that sprays dust removal, the inner wall of box is located catalytic oxidation bin and is provided with catalytic oxidation assembly, the inner wall fixedly connected with catalyst carrier of catalytic oxidation bin, the inside sliding installation of box has two adsorption plates, the utility model discloses can carry out multilayer, all -round purification treatment to epoxy waste gas, thereby reduces the use intensity of adsorbent in adsorption method, reduces the replacement frequency of adsorbent of operating personnel, can better satisfy the increasingly strict environmental protection's emission standard simultaneously, greatly reduces the emission of harmful pollutant to atmospheric environment.

Description

Technical Field

[0001] This utility model application relates to the field of waste gas treatment equipment technology, and in particular to an epoxy waste gas purification device. Background Technology

[0002] Epoxy emissions primarily originate from the production processes of the petrochemical, pharmaceutical, and electronics industries. In the petrochemical industry, ethylene oxide, as an important raw material for organic synthesis, generates significant amounts of epoxy emissions during its production and the manufacture of subsequent related products. The pharmaceutical industry also emits such emissions during certain drug synthesis steps due to the use of compounds containing epoxy groups. Epoxy emissions are complex in composition, containing not only common components like ethylene oxide, benzene, and toluene, but also potentially xylene, formaldehyde, and various volatile organic compounds. These pollutants can persist in the atmosphere for extended periods, triggering a series of environmental problems through photochemical reactions, such as the formation of photochemical smog, which severely impacts air quality.

[0003] Regarding the aforementioned technologies, the inventors believe that currently, common epoxy waste gas purification methods employ adsorption. However, if only adsorption is used for epoxy waste gas purification, the adsorbent is prone to rapid saturation. This is because epoxy waste gas has a complex composition, with multiple organic pollutants acting simultaneously on the adsorbent, causing its pores to be rapidly filled. Once the adsorbent is saturated, it requires frequent replacement by operators, which not only consumes a lot of manpower but also incurs high procurement costs for new adsorbents, significantly increasing operating costs. Furthermore, this unstable treatment efficiency directly leads to poor purification effects, making it difficult to meet increasingly stringent environmental emission standards. Therefore, an epoxy waste gas purification device is proposed to solve the above problems.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] To address the aforementioned problems, this application provides an epoxy exhaust gas purification device.

[0006] The epoxy exhaust gas purification device provided in this utility model application adopts the following technical solution:

[0007] An epoxy waste gas purification device includes a housing, a pretreatment chamber, a catalytic oxidation chamber, and an adsorption chamber. The pretreatment chamber, catalytic oxidation chamber, and adsorption chamber are distributed inside the housing and are interconnected. An air inlet pipe is fixedly connected to the outer side wall of the housing. A filter cartridge is rotatably connected to the housing inside the pretreatment chamber and is connected to the air inlet pipe. A rotating shaft is rotatably connected to the inner wall of the filter cartridge, and a spray assembly for dust removal is installed on the outer wall of the rotating shaft. A catalytic oxidation assembly is installed on the inner wall of the housing within the catalytic oxidation chamber, and a catalyst carrier is fixedly connected to the inner wall of the catalytic oxidation chamber. Two adsorption plates are slidably installed inside the housing within the recovery chamber. An air outlet is fixedly connected to the outer wall of the housing on one side of the adsorption chamber.

[0008] Preferably, the spray assembly has multiple connecting pipes, which are arranged in a circumferential array and fixedly connected to the rotating shaft. The outer walls of the multiple connecting pipes are all fixedly connected with multiple spray heads in a linear array.

[0009] Preferably, a recycling bin is fixedly connected to the outer wall of the box body at the bottom of the pretreatment chamber, and a connection port is fixedly connected to the outer wall of the recycling bin. An inlet is fixedly connected to the side outer wall of the box body, and the inlet is connected to multiple connecting pipes through a rotating shaft.

[0010] Preferably, the rotating shaft rotates through the filter cylinder and is fixedly connected to a secondary bevel gear; the inner wall of the housing is rotatably connected to a main bevel gear, and the main bevel gear meshes with the secondary bevel gear; a servo motor is fixedly connected to the top outer wall of the housing, and the output shaft of the servo motor is fixedly connected to the main bevel gear.

[0011] Preferably, the outer walls of both adsorption plates are fixedly connected to frames, the outer walls of the ends of the frames are provided with fixing grooves, and a threaded rod is provided between the two frames. The threaded rod is rotatably connected to the outer wall of the box, and a ring sleeve is threadedly connected to the outer wall of the threaded rod. Two slide rails are fixedly connected to the outer walls of the box on both sides of the threaded rod, and a locking block is slidably connected between the two slide rails. Two connecting rods are provided between the two locking blocks and the ring sleeve, and the two ends of the two connecting rods are respectively hinged to the two locking blocks and the ring sleeve.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] 1. The epoxy waste gas is initially purified through the pretreatment chamber inside the box, then catalytically oxidized and purified through the catalytic oxidation chamber, and finally deeply purified through the adsorption chamber. Through the synergistic effect of the three, the epoxy waste gas can be purified in a multi-level and all-round way, so that it can better meet the increasingly stringent environmental emission standards and greatly reduce the emission of harmful pollutants into the atmosphere.

[0014] 2. By using the pretreatment chamber and catalytic oxidation chamber to prioritize the purification of dust and organic pollutants in the epoxy waste gas, the intensity of adsorbent use in the subsequent adsorption chamber can be reduced, the frequency of adsorbent replacement by operators can be reduced, and production and operating costs can be effectively reduced. Attached Figure Description

[0015] Figure 1 This is an overall schematic diagram of Embodiment 1 of the application;

[0016] Figure 2 This is a cross-sectional view of the box structure of Embodiment 1 of the application;

[0017] Figure 3 This is a cross-sectional view of the filter cartridge structure of Embodiment 1 of the application;

[0018] Figure 4 This is a schematic diagram of the threaded rod structure of Embodiment 1 of the application.

[0019] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Catalytic oxidation assembly; 3. Servo motor; 4. Air inlet pipe; 5. Liquid inlet; 6. Frame; 7. Pretreatment chamber; 8. Catalytic oxidation chamber; 9. Recovery tank; 10. Connection port; 11. Main bevel gear; 12. Secondary bevel gear; 13. Filter cartridge; 14. Adsorption plate; 15. Air outlet; 16. Rotating shaft; 17. Connecting pipe; 18. Spray head; 19. Catalyst carrier; 20. Fixing groove; 21. Threaded rod; 22. Circular sleeve; 23. Connecting rod; 24. Slide rail; 25. Clamping block; 26. Adsorption chamber. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1 - Figure 4 This application will be described in further detail.

[0021] An epoxy waste gas purification device includes a housing 1, a pretreatment chamber 7, a catalytic oxidation chamber 8, and an adsorption chamber 26. The pretreatment chamber 7, catalytic oxidation chamber 8, and adsorption chamber 26 are distributed inside the housing 1 and are interconnected. The epoxy waste gas first enters the pretreatment chamber 7 for purification, and then sequentially passes through the catalytic oxidation chamber 8 and the adsorption chamber 26 for further purification. An air inlet pipe 4 is fixedly connected to the outer side wall of the housing 1, and a filter cartridge 13 is rotatably connected inside the pretreatment chamber 7. The filter cartridge 13... The filter cartridge 13 is connected to the air inlet pipe 4, which allows epoxy waste gas to enter the filter cartridge 13. The filter cartridge 13 facilitates the filtration of the waste gas by the spray liquid, thus facilitating the recovery of the spray liquid. A rotating shaft 16 is rotatably connected to the inner wall of the filter cartridge 13, and a spray dust removal assembly is installed on the outer wall of the rotating shaft 16. The spray assembly facilitates the pretreatment of the incoming waste gas, and the spray liquid used by the spray assembly is composed of surfactants, alkaline substances, and additives with targeted adsorption effects. This process removes dust, water-soluble pollutants, and some organic pollutants from the exhaust gas. The inner wall of the catalytic oxidation chamber 8 is equipped with a catalytic oxidation component 2, which consists of a heating device and a heat exchanger. The heating device rapidly preheats the exhaust gas, while the heat exchanger uses the heat generated by the reaction to preheat subsequent unreacted exhaust gas. A catalyst carrier 19 is fixedly connected to the inner wall of the catalytic oxidation chamber 8. The catalyst carrier 19 is a catalyst with precious metals as active ingredients, supported on a ceramic carrier. This allows it to work with the catalytic oxidation component 2 to catalytically oxidize the organic pollutants in the epoxy exhaust gas into carbon dioxide and water. Two adsorption plates 14 are slidably installed inside the recovery chamber 9. The secondary treated exhaust gas enters the adsorption chamber 26, where the two adsorption plates 14 deeply adsorb the organic pollutants in the epoxy exhaust gas. An outlet 15 is fixedly connected to the outer wall of the catalytic oxidation chamber 26 on one side of the catalytic oxidation chamber 1, facilitating the discharge of the purified exhaust gas.

[0022] The spray assembly has multiple connecting pipes 17, which are arranged in a circumferential array and fixedly connected to the rotating shaft 16. The outer walls of the multiple connecting pipes 17 are all fixedly connected to multiple spray heads 18 in a linear array. By supplying spray liquid to the multiple spray heads 18, the multiple spray heads 18 can spray to remove dust and some organic pollutants from the epoxy exhaust gas.

[0023] A recycling box 9 is fixedly connected to the outer wall of the box body 1 at the bottom of the pretreatment chamber 7, and a connection port 10 is fixedly connected to the outer wall of the recycling box 9. An inlet 5 is fixedly connected to the side outer wall of the box body 1, and the inlet 5 is connected to multiple connecting pipes 17 through a rotating shaft 16. The recycling box 9 facilitates the guidance of the filtered spray liquid, which is then connected to the spray liquid tank through the connection port 10. The filtered spray liquid is then recycled into the spray liquid tank. At the same time, the inlet 5 is connected to the spray liquid tank through a hose, so that the spray liquid in the spray liquid tank is transported to multiple connecting pipes 17 through the inlet 5, and then transported to multiple spray heads 18 for spraying through the multiple connecting pipes 17.

[0024] A rotating shaft 16 rotates through the filter cylinder 13 and is fixedly connected to a secondary bevel gear 12. A main bevel gear 11 is rotatably connected to the inner wall of the housing 1, and the main bevel gear 11 meshes with the secondary bevel gear 12. A servo motor 3 is fixedly connected to the top outer wall of the housing 1, and the output shaft of the servo motor 3 is fixedly connected to the main bevel gear 11. The servo motor 3 is started by an external power switch, so that the output shaft of the servo motor 3 drives the main bevel gear 11 to rotate, thereby driving the secondary bevel gear 12 to rotate. The secondary bevel gear 12 synchronously drives the filter cylinder 13 to rotate, thereby generating a certain centrifugal force in the filter cylinder 13, which then filters the spray liquid.

[0025] Frames 6 are fixedly connected to the outer walls of both adsorption plates 14. A fixing groove 20 is provided on the outer wall of the end of each frame 6. A threaded rod 21 is provided between the two frames 6, rotatably connected to the outer wall of the housing 1. A circular ring sleeve 22 is threadedly connected to the outer wall of the threaded rod 21. Two slide rails 24 are fixedly connected to the outer walls of the housing 1 on both sides of the threaded rod 21, and locking blocks 25 are slidably connected between the two slide rails 24. Two connecting rods 23 are provided between the two locking blocks 25 and the circular ring sleeve 22, with their ends hinged to the two locking blocks 25 and the circular ring sleeve 22 respectively. By rotating the threaded rod 21, the threaded rod 21 drives the circular ring sleeve 22 to move up and down, which in turn drives the locking blocks 25 to move via the connecting rods 23 on both sides. This allows the locking blocks 25 to engage with the fixing groove 20, thereby fixing or disassembling the frame 6, enabling quick assembly and disassembly of the two adsorption plates 14, facilitating replacement by the operator.

[0026] The implementation principle of the epoxy waste gas purification device according to an embodiment of this utility model is as follows: First, the inlet pipe 4 is connected to the epoxy waste gas outlet, and the liquid inlet 5 is connected to the spray liquid tank via a flexible hose. The connection port 10 is then connected to the spray liquid tank, allowing the epoxy waste gas to enter the filter cartridge 13 through the inlet pipe 4. The servo motor 3 is then started via an external power switch, causing the output shaft of the servo motor 3 to drive the main bevel gear 11 to rotate. This, in turn, drives the secondary bevel gear 12 to rotate. The secondary bevel gear 12 drives the filter cylinder 13 to rotate, and at the same time, the spray liquid is sprayed out through multiple spray heads 18 located inside the filter cylinder 13, so that it can fully contact the epoxy waste gas, remove dust, water-soluble pollutants and some organic pollutants in the epoxy waste gas. At the same time, the filter cylinder 13 filters the spray liquid containing dust, and then the filtered spray liquid flows into the recovery tank 9, and flows back into the spray liquid tank through the connection port 10, realizing the utilization of the spray liquid and reducing production costs.

[0027] When the pretreated epoxy waste gas enters the catalytic oxidation chamber 8, the catalytic oxidation component 2 rapidly preheats the epoxy waste gas to the initial reaction temperature. The heat generated by the reaction in the catalytic oxidation component 2 preheats the subsequent unreacted waste gas, achieving energy recovery. The catalyst loaded on the catalyst carrier 19 exhibits high activity and selectivity for the organic pollutants in the epoxy waste gas, catalytically oxidizing them into carbon dioxide and water. After the epoxy waste gas is treated in the catalytic oxidation chamber 8, there may still be a small amount of unreacted organic pollutants in the epoxy waste gas. These pollutants are deeply adsorbed by the multiple adsorption plates 14 set inside the adsorption chamber 26 and then discharged through the outlet 15, thus purifying the epoxy waste gas. At the same time, by rotating the threaded rod 21, the threaded rod 21 drives the annular sleeve 22 to move up and down. The annular sleeve 22 then drives the locking block 25 to move along the track of the slide rail 24 through the connecting rods 23 on both sides, ensuring that the two locking blocks 25 are engaged with the fixing groove 20, thereby completing the fixation of the two adsorption plates 14.

Claims

1. An epoxy waste gas purification device, comprising a housing (1), a pretreatment chamber (7), a catalytic oxidation chamber (8), and an adsorption chamber (26), characterized in that: The pretreatment chamber (7), catalytic oxidation chamber (8) and adsorption chamber (26) are distributed inside the box (1) and are connected to each other. An air inlet pipe (4) is fixedly connected to the outer side wall of the box (1). A filter cylinder (13) is rotatably connected inside the pretreatment chamber (7) of the box (1). The filter cylinder (13) is connected to the air inlet pipe (4). A rotating shaft (16) is rotatably connected to the inner wall of the filter cylinder (13). A spray assembly for dust removal is installed on the outer wall of the rotating shaft (16). A catalytic oxidation assembly (2) is installed on the inner wall of the catalytic oxidation chamber (8) of the box (1). A catalyst carrier (19) is fixedly connected to the inner wall of the catalytic oxidation chamber (8). Two adsorption plates (14) are slidably installed inside the recovery box (9) of the box (1). An air outlet (15) is fixedly connected to the outer wall of the box (1) on one side of the adsorption chamber (26).

2. The epoxy waste gas purification device according to claim 1, characterized in that: The spray assembly includes multiple connecting pipes (17), which are arranged in a circumferential array and fixedly connected to the rotating shaft (16). The outer walls of the multiple connecting pipes (17) are all fixedly connected with multiple spray heads (18) in a linear array.

3. The epoxy waste gas purification device according to claim 1, characterized in that: The outer wall of the box (1) located at the bottom of the pretreatment chamber (7) is fixedly connected to a recycling box (9), and the outer wall of the recycling box (9) is fixedly connected to a connection port (10). The outer side wall of the box (1) is fixedly connected to a liquid inlet (5), and the liquid inlet (5) is connected to multiple connecting pipes (17) through a rotating shaft (16).

4. The epoxy waste gas purification device according to claim 1, characterized in that: The rotating shaft (16) rotates through the filter cylinder (13) and is fixedly connected to the auxiliary bevel gear (12). The inner wall of the housing (1) is rotatably connected to the main bevel gear (11), and the main bevel gear (11) meshes with the auxiliary bevel gear (12). The top outer wall of the housing (1) is fixedly connected to the servo motor (3), and the output shaft of the servo motor (3) is fixedly connected to the main bevel gear (11).

5. The epoxy waste gas purification device according to claim 1, characterized in that: The outer walls of the two adsorption plates (14) are fixedly connected to a frame (6). The outer wall of the end of the frame (6) is provided with a fixing groove (20). A threaded rod (21) is provided between the two frames (6). The threaded rod (21) is rotatably connected to the outer wall of the box (1). A ring sleeve (22) is threadedly connected to the outer wall of the threaded rod (21). Two slide rails (24) are fixedly connected to the outer walls on both sides of the box (1) located on the threaded rod (21). A locking block (25) is slidably connected between the two slide rails (24). Two connecting rods (23) are provided between the two locking blocks (25) and the ring sleeve (22). The two ends of the two connecting rods (23) are respectively hinged to the two locking blocks (25) and the ring sleeve (22).

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